Lack of time is one of the typical issues founders face. Contacting investors takes time and is undoubtedly crucial. Since time is ultimately the most valuable resource, I am happy to see a tool that can help entrepreneurs save a significant amount of time.
Investor List - A searchable, crowdsourced list of over 1k investors
OpenVC - 2200+ VC firms by thesis to find 'best fit' for your startup
Foundersuite - Tools to get startup sh*t done!
AngelList - Access top deals through investor-led syndicates
List of Investors - Simple list of VC firms and Investors with email, etc.
netPark - netPark is a cloud hosted point of sale and revenue control system for valet or self park operations.